Composition of matter comprising a liquefied gas



t otenteri Sent. 9, i924.

El'o Brewing.

i which the following is a specification.

It has already been proposed to use us an explosive, 3. mix ure or e. combustible compound with a, highly volatile liquid oxidizing agent, such as liquid oxygen or liquie Such a mixture is claimed-in Unite-cl States Patent 1,282,229. I have now tonne that excell nt explosives may be made by supplying o. part or all the combustible material in the above combination as liq uirl liming Volatility of the some order as the liquid ozidizing agents mentioned. Examples of combustible liquids which can be used in this way the very low-boiling hydrocarbons, such as metlr 1e, tbsne, and propane, and the oletine hydro cons, such as ethylene end propylene.

A charge of such mixture may be plocletl by merely igniting the gas mixture surrouncling it, since both the eoinbustible end. oxidizing constituents volatilize and an 'gnit'ble mixture is thus formed. It the e consists solely of these highly voleu ds, it will usually be necesssry to the charge to prevent absorption and premature evaporation of the 1 his. By the use of an absorbent for the liquids, evaporation is delayed. The sbent material may be oxidizing or cornlonstible in nature, or it may be inert, but prefer E a higlily absorbent carbons-- ceous material such as that obtained. by char ring the pithy Wood of trees and bushes or" the oclironm (balsa) or sole. grougs. Cher coal from other sources may, of course, be used. Even when an absorbent is usecl, heatinsulation may be desirable under some conditions. Other explosives'or other oxidizing or combustible substances may be added to the volatile liquids mentioned to modify the qualities oftlie explosives formed and inert materials may of course, be added also. When more than one oxidizing or reducing in gretlient is employed, clue regard must be given to the proper balance between oxidizing and reducing constituents, and to the efi'ect on this balance of the loss by e tion of a portion of one or more or". the can @IEFRISIYIIG In LEQUELFED 3A5.

Application. filed July 2 5, 1936. Serial 398/2291.

stit-uents between the time of preparing charge and the time of firing it.

"18 combination or. liquefied gaseous coin-- b' isle and oxidizing agents with en eb- S flifill j, gives particularly favorable results.

volatile then methane, will eJa-porste from the clisrge much more rapidly than the metl ane, so that the proportion between the origlizing and combustible ii ill undergo continued. and rapid change. For this reeson, the ratio of the ingredients which givesen explosion of maximum intensity will only exist for a short period of tiu e. if liquid oxygen is absorbed in e carbonaceous etsorbent, methane being ornittctl and the absorbent material supplying the combustible ingredient of the en piosire, a similar variation in the rotio oi oxidizer to combustible takes place. The evaporation of the oxygen is (lelsyeti by tbe presence of the absorbent out this n lventege is in e nieusure discounted by the tact that the combustible ingredient oi the mixture is non-volatile. it, however, a mixture of and methane is token up in on e sorbent material, the rates of e'vegoor'" of the liquefied gases are very favorably affected. The liquid is then contained in an exceedingly lerge number ofminute booties or liquid with bent-insulating Wells between. Under these conditions, the evaporation of the liquid constituents of the cartridge may take place in such it way that the rstio be tween the quantities present remaim sub stantially unchanged. Because of no; that the porous absorbent practioully vents transfer of heat by radiation end. eon yection e"-:o 2oretion of the liquici conte of the successive superposed. layers or cells is progressive rather than simultaneous, encl all the methane in a given layer oi? cells be volatilized before there is any substantial evaporation of oxygen from the layers oft cells just insicle the given layer. The cfiect is, therefore, the some as it the, liquefied gases could be made to form a constant boiling mixture of any desired oomposition. When the absorbent used in the above e:;- ample itself a part of tlie combustible ingredient of the exnlosive, for example,

when it is carbonaceous n composition, 

